P0171 and P0174 after VCG change
Great writeup! I just did this replacement today as mine was leaking oil like crazy (also had to replace oil level sender and do an oil change, but that's unrelated!).
Car drives fine - but after a 45 minute drive on the freeway the SES light came on with codes P0171 and P0174.... something about it running lean. I cleaned off the head and valve cover well before placing them on, used a small amount of RTV as indicated, and tightened the nuts well. Any thoughts as to why this is coming up? Car seems to be running fine!